package com.itheima.user.service;

import com.itheima.user.mapper.UserMapper;
import com.itheima.user.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class UserService {
    @Autowired
    private UserMapper userMapper;

public User queryById(Long id){

    try {
        Thread.sleep(2000);
    } catch (InterruptedException e) {
        e.printStackTrace();
    }

    return userMapper.selectByPrimaryKey(id);
}




}
